Hi Felix, you need the Start node and the Time:TimeOfDay node.
Connecting the Start node's output to the Time:TimeOfDay's Set Time
input will trigger a specified time to be set on start. The time is
based on 24 hour format, so 8pm is 20. In the Time:TimeOfDay node's
inputs, type in 20 in the Time box. Now when you jump into the game,
it will be 8pm.